不同地理种源雷公藤生长适宜性评价

Growth adaptability evaluation of Tripterygium wilfordii from different geography provenances

通过对永安国有林场内引种的24个雷公藤种源208株单株的1 248株扦插苗构建的雷公藤种质资源生长与生物量积累调查,利用主成分分析方法进行不同地理种源雷公藤生长适宜性分析和评价。结果表明,种源的差异主要是由雷公藤的生物量及其主要器官如枝与根的生长决定。福建闽清、浙江江山、湖南湘乡、福建连城、福建大田、福建泰宁谢家龙、福建泰宁优树、福建德化、浙江武义、江西厢东、浙江松阳、浙江景宁种源雷公藤生长表现良好,可作为优良种源重点发展。利用聚类分析方法,除了福建仙游、福建永安和福建泰宁长坑外,浙江地区以及福建大部分地区雷公藤归为一类,因此该聚类结果在一定程度上反映了种源间的亲缘关系。

Through the investigation on growth and biomass of germ plasma resource of Tripterygium wilfordii,which were structured by 1 248 cutting seedlings from 208 individual plants introduced from 24 T.wilfordii provenances in National Forest Farm of Yong′an in Fujian,growth adaptability of T.wilfordii provenances was analyzed and evaluated by the componential analysis method.The results showed that the difference between seed sources was preliminarily dominated by biomass and growth of main organs such as branches and roots.It was preliminarily determined that seed sources in Minqing of Fujian,Jiangshan of Zhejiang,Xiangxiang of Hunan,Liancheng of Fujian et al grew well which would be used as optimal provenance.Using clustering analysis method,it showed that Zhejiang and most areas of Fujian were clustered together except for seed sources in Xianyou of Fujian,Yong′an of Fujian and Changkeng of Taining of Fujian,so the result of clustering reflected genetic relationship of plants species in a certain extent.